Leadership

Jesse Arenivas is the President and Chief Executive Officer of EnLink Midstream and a director on the EnLink Board of Directors.

Prior to joining EnLink, he spent almost 20 years with Kinder Morgan Inc. (KMI), where he helped the company grow to become the largest transporter of CO₂ in North America. He served as President of the CO₂ segment since 2014 and was appointed President of KMI’s Energy Transition Ventures team upon its formation in early 2021.

Arenivas joined KMI in 2003 and previously served in various financial, accounting, and business development roles, including Vice President of Finance and Accounting for KMI’s CO₂ business segment. Before joining KMI, Arenivas spent five years at ConocoPhillips Co. in financial and commercial roles.

Arenivas holds a Bachelor of Business Administration in finance from the University of Texas Permian Basin and is a certified public accountant.

Adam Forman is Executive Vice President, General Counsel, and Secretary for EnLink Midstream. In this role, he leads the legal, contract administration, and corporate communications departments, and serves as executive sponsor of EnLink’s sustainability strategy.

Prior to joining EnLink in 2023, Forman spent almost 24 years at Kinder Morgan, most recently serving as Vice President, Deputy General Counsel, and Secretary. During his time there, he provided legal counsel on mergers and acquisitions, financing, financial reporting, joint venture, and procurement matters, as well as for the Products Pipelines, Terminals, and CO₂ (Energy Transition Ventures) business segments. As the corporate secretary, he assisted with the company’s sustainability initiatives. Prior to Kinder Morgan, he served as an Associate General Counsel at Quanta Services, an infrastructure services company.

Forman earned a Bachelor of Arts in political science from Stanford University and a Juris Doctor from St. Mary’s University School of Law. He also holds a Master of Business Administration from Rice University’s Jones Graduate School of Business. He serves on the Board of Trustees for the Houston Congregation for Reform Judaism and the Post Oak School.

Benjamin D. Lamb is Executive Vice President and Chief Financial Officer (CFO) for EnLink Midstream. In this role, Lamb oversees EnLink's financial strategy, planning, and reporting, as well as corporate development.

Prior to becoming CFO, Lamb served as EnLink Executive Vice President and Chief Operating Officer, overseeing operations and commercial activity, including the development of EnLink’s Carbon Solutions team and several transformative acquisitions that grew EnLink’s asset base. He has played a key role in every acquisition and major deal, as well as the development and execution of the company’s strategic plans, since joining EnLink’s predecessor company, Crosstex Energy, in 2012. He also held several leadership roles in the company’s financial organization, including Senior Vice President of Finance and Corporate Development.

Prior to joining the company, he worked in the investment banking industry advising executives and boards of major corporations on critical strategic and financial decisions, including mergers, acquisitions, corporate and financial restructurings, and financings in the debt, equity, and bank capital markets.

Lamb earned a Bachelor of Business Administration degree in finance, economics, and international business from Baylor University.

Walter Pinto is Executive Vice President and Chief Operating Officer for EnLink Midstream. In this role, Pinto is responsible for operational efforts across all of EnLink’s asset areas, as well as engineering, operational excellence, and environmental, health, and safety.

Pinto joined EnLink in early 2020 to lead the optimization of operational and business performance. He led “The EnLink Way” program that evolved how EnLink operates through process improvements and adoption of new technologies. He also spearheaded the creation of EnLink’s award-winning GoalZERO safety program.

Prior to joining EnLink, Pinto served as a Senior Advisor of Hastings Equity Partners, a private equity firm, supporting Hastings in the sourcing, diligence, and stewardship of existing portfolio companies and new opportunities. He previously spent 25 years at LyondellBasell Industries in various roles, including as Senior Director, Global Projects, Engineering, Turnarounds, Reliability, and Maintenance and head of several manufacturing complexes.

He has served as a board member of industrial service companies and several trade and community organizations. He received a Master of Science in mechanical engineering from the University of Wisconsin, Milwaukee, and a Bachelor of Science in mechanical engineering from National Institute of Technology in India.

Dilanka Seimon is Executive Vice President and Chief Commercial Officer for EnLink Midstream. In this role, he oversees commercial and marketing efforts for the company’s traditional midstream and Carbon Solutions businesses.

Seimon has over 20 years of experience in strategy and commercial leadership roles across the upstream and midstream energy industries, spanning both traditional hydrocarbon energy and emerging energy sectors, such as carbon capture and storage, renewable fuels, hydrogen, and carbon markets.

Prior to joining EnLink, he served as Vice President of Alternative Energy at Energy Transfer. He previously served as Vice President Sales and Marketing at BHP, leading teams responsible for logistics and marketing of BHP’s global oil, gas, natural gas liquids, and liquified natural gas production portfolio, as well as procuring power, natural gas, and diesel for BHP’s mining assets. Prior to that, he held various roles in natural gas trading, marketing, and origination.

Seimon serves on the Board of Directors of Big Brothers Big Sisters of Greater Houston and the Foundation Board of Trustees of Georgia College & State University, his alma mater where he received a Bachelor of Science in economics. He also earned a Master of Business Administration from Duke University’s Fuqua School of Business and is a graduate of the General Management Program at Harvard Business School.

Pierce H. Norton II is president and chief executive officer of ONEOK and is a member of the ONEOK Board of Directors. Previously, Norton was president and chief executive officer of ONE Gas, Inc. for more than seven years and served as a member of the ONE Gas board. Norton worked for ONEOK for almost 10 years, having joined the company in 2004. Prior to the separation of ONE Gas in January 2014, Norton served as executive vice president, commercial, of ONEOK and ONEOK Partners.

His other roles at ONEOK included executive vice president and chief operating officer of ONEOK and ONEOK Partners, responsible for the company's natural gas gathering and processing, natural gas pipelines, natural gas liquids, natural gas distribution and energy services business segments. Norton also held the position as president of ONEOK Distribution Companies – Oklahoma Natural Gas, Kansas Gas Service and Texas Gas Service.

An Alabama native, Norton earned a Bachelor of Science degree in mechanical engineering in 1982 from the University of Alabama in Tuscaloosa and was a University of Alabama College of Engineering Distinguished Fellow. He also is a graduate of Harvard Business School's Advanced Management Program.

Deborah G. Adams served on the Executive Leadership Team at Phillips 66 as Senior Vice President of HSE, Projects and Procurement from 2014 until her retirement in October 2016. She led the midstream operations of Phillips 66 and ConocoPhillips as the Division President of Transportation from 2008 to 2014. She also held various leadership posts including leading the international refining business for ConocoPhillips and serving on several of ConocoPhillips’ joint venture boards.

Adams serves as a member of the Oklahoma State University Foundation Board of Trustees and on the Board of Governors. In 2014, Adams was inducted into the Oklahoma State University College of Engineering, Architecture and Technology Hall of Fame, and in 2015, the National Diversity Council named Adams to the list of the Top 50 Most Powerful Women in Oil and Gas. Adams is on the Board of Amplify Energy Corp., Austin Industries, and MRC Global, Inc. She received a Bachelor of Science in chemical engineering from Oklahoma State University.

Jesse Arenivas is the President and Chief Executive Officer of EnLink Midstream and a director on the EnLink Board of Directors.

Prior to joining EnLink, he spent almost 20 years with Kinder Morgan Inc. (KMI), where he helped the company grow to become the largest transporter of CO₂ in North America. He served as President of the CO₂ segment since 2014 and was appointed President of KMI’s Energy Transition Ventures team upon its formation in early 2021.

Arenivas joined KMI in 2003 and previously served in various financial, accounting, and business development roles, including Vice President of Finance and Accounting for KMI’s CO₂ business segment. Before joining KMI, Arenivas spent five years at ConocoPhillips Co. in financial and commercial roles.

Arenivas holds a Bachelor of Business Administration in finance from the University of Texas Permian Basin and is a certified public accountant.

Tiffany (TJ) Thom Cepak most recently served as the Chief Financial Officer of Energy XXI Gulf Coast, Inc., an oil and natural gas development and production company, until its sale in October 2018. She also served as the Chief Financial Officer of KLR Energy Acquisition Corp. (and, subsequent to its business combination, Rosehill Resources Inc.) and as Chief Financial Officer of EPL Oil & Gas, Inc. She held a number of previous positions with EPL, including Treasurer, Director of Investor Relations, and Director of Corporate Reserves. She began her career as a Senior Reservoir Engineer with Exxon Production Co. and Exxon Mobil Co. with operational roles, including reservoir and subsurface completion engineering.

Cepak currently serves on the board of directors of Ranger Oil Corp., Patterson-UTI Energy, Inc., and California Resources Corp., where she serves as Board Chair, and previously served as a director of Yates Petroleum Corp.

She holds a Bachelor of Science in engineering from the University of Illinois and a Master of Business Administration from Tulane University.

Leldon E. Echols has a long history with EnLink, having been a director on the Board since the company formed in 2014 and a member of EnLink’s predecessor company’s board since 2008.

Echols served as Executive Vice President and Chief Financial Officer for Centex Corp. until June 2006. Prior to his time at Centex, Echols spent 22 years with Arthur Andersen LLP. He is currently a member of the Board of Directors of Trinity Industries and HF Sinclair Corp., and he previously served on the Board of Directors of TXU Corp.

He holds a Bachelor of Science in accounting from Arkansas State University, is a Certified Public Accountant (CPA), and is a member of both the Texas Society of Certified Public Accountants and the American Institute of CPAs.

Walter S. Hulse III is executive vice president, chief financial officer, treasurer, investor relations and corporate development, of ONEOK.

Hulse joined ONEOK in 2015 from Spinnaker Strategic Advisory Services, LLC, which provided consulting services to mid-cap and large-cap publicly traded companies, including the review of merger and/or acquisition opportunities, debt and equity markets, corporate restructuring and potential divestitures. Hulse served as a consultant to ONEOK for many years, including during the separation of the company's natural gas distribution business into the stand-alone publicly traded company, ONE Gas.

Previously, Hulse was vice chairman of the Investment Banking Department, managing director and head of the business development group at UBS Investment Bank. Prior to that, he was head of the Global Utility Group at UBS Investment Bank. Before joining UBS through its merger with PaineWebber Incorporated, Hulse held various roles at Paine Webber and J.P. Morgan.

Hulse graduated from the Wharton School at the University of Pennsylvania with a Bachelor of Science in economics.

Lyndon C. Taylor is executive vice president, chief legal officer and assistant secretary of ONEOK.

Taylor joined ONEOK in 2023. Before joining ONEOK, he was executive vice president, chief legal and administrative officer of Devon Energy Corporation, responsible for overseeing the legal, corporate governance, compliance and government relations functions. Prior to Devon, Taylor founded and led the Houston office of Skadden Arps, serving the legal needs of numerous energy clients for 12 years. He has in-depth experience in many aspects of the energy business, including capital markets and Securities and Exchange Commission (SEC) activities, merger and acquisition (M&A) deals, commercial transactions, regulatory compliance, labor and employment matters, intellectual property and litigation.

With nearly 40 years of legal expertise, primarily in the energy space, Taylor has extensive experience guiding organizations on legal and business strategies that balance risk and company objectives, helping them to be successful in a changing market.

Taylor earned a Juris Doctor with honors from the University of Oklahoma College of Law and a Bachelor of Science in industrial engineering and management from Oklahoma State University.